Muffler.



N. M MAT LA.

' MUFFLER.

LPPLIOATION FILED AUG.28, 1912.

Patented Nov. 26, 1912.

4 z 7 A0 7. 0 7 v M y m N N )7 M w M v u z W m 2 o o .v :m m m M M T 4W3 ti W 5 6 l 2 w v 6 v awueut'o'a Ma il lw wane Mao my I a NICHOLAS MICHAEL MATULA, or JOHNSTOWN, rnnnsrnvama;

MUFFLER,

Specification of Letters Patent.

Patented Nov. 26, 1912.

' Application filed August as, 1912. Serial No. 717,633.;

To all whom it may concern:

"Be 1t known that I, NIoIgoLAs M'IGi-IAEL I MATULA, a citizen of Croatia, in the Kingdom of Austria-Himgary, a subject of King Francis Joseph residing at Johnstown, in the county of ambria and State of Pennsylvania, have invented certain-new and useful Improvements in Mufilers, of which the following is a specification, reference being had to the accompanying drawings.

The present invention relates to new and useful improvements in mufflers and one which is designed to be used more particularly with internal combustion engines.

The primary object of the present invention is to provide a device of this character which Will be neat in appearance and com; pact in form, and one which may be readily attached to a supporting frame and one which will properly baffle the exhaust as it passes through the same.

This invention has for a further object a sin1ple,'durable and'eilicient construction of apparatus of this character, the parts of which may be cheaply manufactured and readily assembled and installed, and which will require practically 'no attention to maintain in proper running order. And the invention also aims to generally improve de vices of this class and to render them more useful and commercially desirable.

With theabove and other objects in view, this invention consists generallyof a pair of spaced plates having formed thereloetween, a pluraly of communicating com-- partments so that the exhaust gases may pass through the compartments, and subsequently be exl'iausted within the atmosphere.

This invention further consists of novel details of construction, combination, formation and arrangement of parts, as will be hereinafter more fully described, claimed and particularly pointed out in the appended drawir j's, in which, V

F ne 1 is a vertical longitudinal section cnih-mgih my invention; Fig. 2 is a li1.lS verse sect in taken on the line of l lg 31. and Fig. 3 is a front elevation of one of the and plates.

' ence now being had to the acdomd vings, corresponding parts hed like numerals throughout al views, the invention consists of a pair of spaced pla es indicated by the numerals l and. 2 pcctively which are preferably cast in one piece of material.

The end plate 2 is provided with a vertical extension having a passageway 3 formed therein which is in cominiui-ication with the exhaust port-of t-he engine, and the upper extremity of this extension is internally threaded. so that the same may be readily detachably secured to the exhaust pipe of the engine. Each of these plates 1 and 2 is provided Within oneface thereof with contrally located recesses alter the reception of a tubular member 5 having its opening in communication with the passageway 3.

These recesses; are internallythreaded for the reception of the threaded e-nds'ot the tubular member 5, whereby the same may be detachably as Well as adjustably mounted within the said recesses. Theplate llis provided upon the periphery thereof with right and left-handed threads, whereas the opposite plate 2 is provided with a threaded reduced portion, thereby forming a shoulder (Supon the periphery thereof. A cylindrical sleeve 7 being internally threaded adjacent its outer extremities, is adaptedto be'placed upon the threaded peripheries of the plates land 2, thereby completely submerging the interior of the device; Y Each. of the said plates 1 and 2 is provided WltlI'OpPOSltG alininggrooves 8 which are formed concentric with the plates and'adapted to receive a plurality of partitions 9. The said partitions 9-are spaced from the tnbularmembei' in increasing ratios, thereby 'i'orming chambers 10 therebetwcen having increasing areas. These partitions and also the tubular member are provided with a plurality of apertures 11, whereby the exhaust gases may freely pass through the same. I

One of the particular features of the pres ent invention is the arrangement of these apertures 11, so that as the exhaust pass through the same. the noise of the will be softened before being exhausted Within the atmosphere. Tl ese apertures 11 are arranged in rows Within the said partitions and inner cylindrical incur and the said inner cylindri t ibstantially tour of these rows of apertrues which are arranged at right angles within the same, Whereas the next adjacent 11 artition is provided with six rows of apertures and the remaining partitions are also )rov ided with similar increasingroWs of these apertures. It is also to be noted that these a 'aertu' s dfnot extend in alinement with the apertures of the adjacent partitions member so "that the exhaust gases will be checked when passing through the same.

A pluralit of apertures 12 are formed within thep ate 1 and extend transversely thereof, and arein communication with the chamber 13 formed within the body portion of themufiler between the sleeve 7 and the outer partition mounted therein.

An exhaust manifold I4 is provided with an enlarged circular portion 15 which is detachably mounted upon the outer periphery of the plate 1, as shown, and has extending therefrom, a depending portion having a passageway 16 formed therein which leads to the atmosphere. The outer :face of the plate 1 is inclined inwardly, whereas the connection between the "enlarged portion 15 of the exhaust manifold and the depending portion formed integral therewith, inclines outwardly to form a chamber 17, and it is obvious as the gases pass through the transverse openings 12 formed within the plate 1, they will abut against the inclined .wall 18 of the exhaustmanifold and then circulate within the chamber 17, before entering into the atmosphere. A bolt 19 is formed within the inclined wall 18 of the exhaust manifold which will apparently provide means for supporting the mufiier to any suitable frame or support. i

From the foregoin description taken in' connection with the rawings annexed hereto, the operation and advantages of this'improved mufiier will be readily apparent and understood by those skilled within the art.

I have in theforegoing described a simple I and preferred form of my invention; but I desire it to be understood that no limitation to the structural details herein set forth are limited, to preserve the'ri'ght to an changes, alterations" or modifications whic may be resorted to within the sco e of my invention and without departing rom the spirit or sacrificin the utility of the same.

What claim is 1. In a mufiier, the combination with a .casing, of a pair of spaced end plates mounted therein, a plurality of concentric apertured partitions mounted between said end plates, the said partitions being spaced at an increasing ratio from each of the said partitions and from the center of the casing,

the atmosphere and means of communication between the said chamber and the interior of the casing substantially as described.

In testimony whereof I hereunto aflix my signature in the presence of two witnesses.

NICHOLAS MICHAEL MATULA. Witnesses a H. W. STOREY,- JOSE Hn'rznmn.

Copies of this patent may be obtained for in cents each, by addressing the Commissioner of Patents,

Washington, D. O. I 

